A warm welcome to the Community, eugenepalletserv.
You can create a deposit or vendor refund to record the returned bill pay check back to your account. Here's how:
- Click + New in the left panel and choose Bank Deposit.
- From the Account ▼ dropdown, choose the account you want to put the money into.
- Enter the amount and make sure to select the correct date.
- Hit Save and close.
I'll be adding this article: Reconcile an account in QuickBooks Online. This will provide you with steps on how to manually reconcile your account that's not connected to online banking.
Let me know if there's anything else you need in QuickBooks, I'll be around to help. Have a good one.